Larry M. Weisenthal, M.D., PhD., has the patent for a laboratory-testing method that identifies cancer patients who can benefit from new drugs designed to strengthen their immune systems. The testing could make it easier to test the effectiveness of new immunotherapy drugs. He had discovered that endothelial cells (artery-forming cells) die in a special way that involves release of highly calcified micro-particles. These escape from dying endothelial cells and trigger the body's normal immune response.